20555683316 has 24 divisors (see below), whose sum is σ = 41131070400. Its totient is φ = 8805356352.

The previous prime is 20555683307. The next prime is 20555683327. The reversal of 20555683316 is 61338655502.

It is a super-2 number, since 2×20555683316² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116105 + ... + 233648.

It is an arithmetic number, because the mean of its divisors is an integer number (1713794600).

Almost surely, 2^20555683316 is an apocalyptic number.

It is an amenable number.

20555683316 is an abundant number, since it is smaller than the sum of its proper divisors (20575387084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20555683316 is a wasteful number, since it uses less digits than its factorization.

20555683316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351863 (or 351861 counting only the distinct ones).

The product of its (nonzero) digits is 648000, while the sum is 44.

The spelling of 20555683316 in words is "twenty billion, five hundred fifty-five million, six hundred eighty-three thousand, three hundred sixteen".